Iron 273 4 barrel manifolds

I once had a 71Demon Sizzler, born with a single-plain 2bbl on it. That intake reminded me a lot of the Commando 4bbl intake. IIRC the carb on there was a Rochester but not sure anymore.
She went like stink with the 9:1ish Scr. I still have it; dunno what I'm saving it for...... It could only be better with a 4bbl pad.